12 Replies Latest reply: Mar 21, 2014 9:09 AM by Vandana B -Oracle RSS

    ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

    Soumyajit Haldar

      Hi,

       

      I have 4 node RAC (11.2.0.3) on Exadata for my EBS (12.1.3). Due to certain maintenace requirement, I had to shutdown the first two instances (RAC1 and RAC2) and the local listener of my RAC.

       

      Previously, everything was working fine but after shutting down first two instances, I am hitting ORA-12514 sometime. And othertimes, it is working fine. I am connecting to the database from EBS using scan and service name.

       

      Can you please help me to identify why I am hitting this error?

       

      Regards,

      Soumyajit

       

      PS: My understanding is this is a database connection issue and thus placed in database forum instead of EBS.